Reference voltage detector for power-on sequence in a memory
US6956409B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2003 |
| Grant date | Oct 18, 2005 |
| Priority date | — |
| Expiry date | Aug 28, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/1252
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
System and method for detecting a reference signal. A preferred embodiment comprises a latch (such as the latch 320) and a filter (such as the filter 325). The latch tracks a reference signal at its input and reflects the reference signal at its output. The filter can be coupled to the output of the latch and may inject a delay to help eliminate the effects of glitches and noise. When the reference signal reaches a specified value, a control signal from the filter causes the latch to store the reference signal. A delay imparted by the filter ensures that the latch does not store the reference signal until a finite amount of time after the reference signal reaches the specified value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.